Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ceec97e06794aba…

MALICIOUS

PDF

65.0 KB Created: 2020-12-31 19:06:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 378f4a0c47db9a2c75ab2217de18ced5 SHA-1: e92881e763361ae509f6619a293a83ab5ff8dfb1 SHA-256: 6ceec97e06794aba016e83d1b10099eb275f81029500c6e9f8962a3e19774cc3
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. The 'SE_SECRET_RECOVERY_LURE' heuristic suggests the document attempts to trick users into revealing sensitive information like recovery phrases or private keys. The presence of numerous external links, including one to 'trafftec.ru', points towards a phishing or link-farming attack pattern. No scripts were extracted, but the PDF structure itself is designed to host malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/123?utm_term=mayflash+gamecube+adapter PDF link annotation
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/rusew.pdfIn PDF document text
    • https://xavilisepu.weebly.com/uploads/1/3/4/2/134235747/tamitasusijiv.pdfIn PDF document text
    • https://luvupomadimudux.weebly.com/uploads/1/3/4/3/134350134/fobogod-jizituve-pepuzuwa-wufaluf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8f9fb67a3a9.pdfIn PDF document text
    • https://lekusimije.weebly.com/uploads/1/3/1/3/131383821/lajokimamib_selavo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490539/normal_5fce2ed101016.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/702cfbe7a4a1.pdfIn PDF document text
    • https://mutabezikubi.weebly.com/uploads/1/3/4/7/134739743/6106773.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427509/normal_5fe43fec94ba5.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/miwem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bezorito/doctor_s_note_sample_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/symmetry_worksheets_kindergarten_free.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/jefugen.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/bitcoin_private_key_finder_software_free.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE39 5816 bytes
SHA-256: 0e5d5882dd098783c7190617f1bc1b982b82dcf0edd6e1ce5a8ed7998a4fdbd2
font_01_sfnt_off0000d1f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F8 10940 bytes
SHA-256: 9748765de95bac888a335d3c0c370d86e8cca0b8d856f815ee68f06e30e64c86

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